74LVC3G14DP datasheet(7/17 Pages) PHILIPS

7 / 17 page

9397 750 14543

Product data sheet

Rev. 03 — 31 January 2005

7 of 17

Philips Semiconductors

74LVC3G14

Triple inverting Schmitt trigger with 5 V tolerant input

13. Dynamic characteristics

[1]

All typical values are measured at nominal VCC and Tamb =25 °C.

[2]

CPD is used to determine the dynamic power dissipation (PD in µW).

PD =CPD × VCC2 × fi × N + Σ(CL × VCC2 × fo) where:

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in V;

N = number of inputs switching;

Σ(C

L × VCC

× f

o) = sum of outputs.

[3]

The condition is VI = GND to VCC.

Table 9:

Dynamic characteristics

GND = 0 V; see Figure 7 for test circuit.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tamb = −40 °C to +85 °C [1]

tPHL, tPLH

propagation delay input nA

to output nY

see Figure 6

VCC = 1.65 V to 1.95 V

1.0

4.2

11.0

VCC = 2.3 V to 2.7 V

0.5

3.0

6.5

VCC = 2.7 V

0.5

3.8

7.0

VCC = 3.0 V to 3.6 V

0.5

3.2

6.0

VCC = 4.5 V to 5.5 V

0.5

2.4

4.3

CPD

power dissipation

capacitance per buffer

VCC = 3.3 V

[2] [3] -

18.1

Tamb = −40 °C to +125 °C

tPHL, tPLH

propagation delay input nA

to output nY

see Figure 6

VCC = 1.65 V to 1.95 V

1.0

12.0

VCC = 2.3 V to 2.7 V

0.5

7.2

VCC = 2.7 V

0.5

7.7

VCC = 3.0 V to 3.6 V

0.5

6.7

VCC = 4.5 V to 5.5 V

0.5

4.7

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